370 
SUMMARY OF CURRENT RESEARCHES RELATING TO 
the different groups : — In Pilacre and the Auricularieae they are elongated 
and filiform, septated horizontally, and with lateral spores; in the 
Tremellineae septated transversely ; in the Autobasidiomycetes they are 
not septated. The relationship of the various groups to one another, as 
shown by the structure of the hasids, is closely worked out. The 
chlamydospores which, in their simplest form, are simply short 
fragments of hyphse, attain a great variety of development in the 
Uredinese and Ustilaginea3,* where the true reproductive organs are so 
greatly suppressed that the fungi become conspicuous only through the 
germination of the chlamydospores. The unseptated sporophores of 
Entyloma and Tilletia with apical spores closely resemble perfect hasids, 
and the Ustilagineae are therefore nearly related to the Basidiomycetes. 
In the Uredineae, besides three different kinds of chlamydospores, there 
are also spermogones with “ spermatia ” and promyceles with sterigmas, 
or two di&rent forms of conids. The Uredineaa are, therefore, a family 
of Protobasidiomycetes with gymnocarpous rudiments of basids. The 
relationship is further traced between these families of Fungi and the 
Oomycetes, Zygomycetes, and Ascomycetes. 
Schroter’s Cryptogamic Flora of Silesia.t — The first half of the 
third volume of this important work contains all the orders of Fungi 
except the Ascomycetes and the Imperfect®. The author separates the 
Chytridiace® and the Zygomycetes from the Oomycetes, erecting them 
into an independent and a parallel series ; the Zygomycetes being either 
derived from the Protococcace® through the Chytridiace®, or the latter 
from the Zygomycetes by retrogression. In the Uredine® he regards 
the teleutospore-layer rather than the ®cidia as the analogue of the 
ascocarp of the Ascomycetes. The Basidiomycetes with transversely 
septated basids are separated as a special group under the name 
Auricularie® ; the Basidiomycetes themselves are divided into 
Tremelline®, Dacryomycetes, and Eubasidiomycetes, the latter in- 
cluding the Hymenomycetes, Gasteromycetes, and Phalloide®. Proto- 
myces and the Ustilagine® occupy a place intermediate between the 
Oomycetes and the Uredine®. 
Mycetozoa, 
Classification of Myxomycetes.J — Herr J. Schroter divides the 
Myxomycetes into the three following groups : — 
A. Pipe fructification consisting of a mass of free spores. 
a. Saprophytes ; the amoeboid bodies unite into compound 
plasmodes without completely coalescing, Aciiasie^. 
h. Parasites in the interior of living cells, forming, as far as is 
known, true plasmodes, Phytomyxine^. 
B. Spores formed in the interior of sporanges or on the outside of 
disc-shaped or columnar fructifications ; true plasmodes, 
Myxogastres. 
* Cf. this Journal, 1889, p. 787. 
t Dritter Baud, Ite Halfte, Breslau, 1889, 8vo, 814 pp. See Bot. Ztg., xlviii. 
(1890) p. 76. 
I Engler ii. Prautl’s Natiirl. Pflanzenfam., 36 Lief., vou J. Schroter, Leipzig, 1889. 
See Hedwigia, xxviii. (1889) p. 375. 
